Example

Graphically Finding the Equation of a Line Perpendicular to x=5x = 5 Through (3,2)(3, -2)

To graphically find the equation of a line perpendicular to the vertical line x=5x = 5 that passes through the point (3,2)(3, -2), plot the initial vertical line and the specific point. A line orthogonal to a vertical axis is completely horizontal, so sketch a horizontal line directly passing through (3,2)(3, -2). By examining the coordinates across this newly drawn horizontal line, observation confirms that every point maintains a consistent yy-coordinate of 2-2. Consequently, the equation governing this perpendicular intersecting line reduces visually to exactly y=2y = -2. This graphical method grants direct visual assurance of these perpendicular vertical and horizontal intersections without relying on complex algebraic calculation.

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Updated 2026-05-03

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